The standard features of the Audi S5 4.2L include 4.2L V-8 354HP engine, 6-speed manual transmission with overdrive, 4-wheel anti-lock brakes (ABS), side seat mounted airbags, Sideguard curtain 1st and 2nd row overhead airbags, driver and passenger knee airbag, airbag occupancy sensor, automatic, 19" alloy wheels, cruise control, ABS and driveline traction control, and a quattro all-wheel drive.